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Differences What are the advantages of each

Front view of AMD Sempron X2 198

Reasons to consider the
AMD Sempron X2 198

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Much lower typical power consumption 52.81W vs 81.25W 35% lower typical power consumption
Much lower annual home energy cost 15.66 $/year vs 24.09 $/year 35% lower annual home energy cost
Much lower annual commercial energy cost 56.94 $/year vs 87.6 $/year 35% lower annual commercial energy cost
Front view of AMD Athlon II X4 651

Reasons to consider the
AMD Athlon II X4 651

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Much more l2 cache 4 MB vs 1 MB 4x more l2 cache; more data can be stored in the l2 cache for quick access later
Significantly higher clock speed 3 GHz vs 2.5 GHz 20% higher clock speed
Much better PassMark score 3,569 vs 1,413 More than 2.5x better PassMark score
More cores 4 vs 2 Twice as many cores; run more applications at once
More threads 4 vs 2 Twice as many threads
Much better overclocked clock speed (Air) 3.41 GHz vs 2.5 GHz More than 35% better overclocked clock speed (Air)
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Significantly better overclocked clock speed (Water) 3 GHz vs 2.5 GHz 20% better overclocked clock speed (Water)

Benchmarks Real world tests of Sempron X2 198 vs Athlon II X4 651

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Sempron X2 198  vs
Athlon II X4 651 
Clock speed 2.5 GHz 3 GHz
Turbo clock speed None None
Cores Dual core Quad core
Socket type
FM1

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
AMD64
AMD-V
3DNow!
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 65W 100W
Annual home energy cost 15.66 $/year 24.09 $/year
Annual commercial energy cost 56.94 $/year 87.6 $/year
Performance per watt 1.18 pt/W 1.51 pt/W
Typical power consumption 52.81W 81.25W

details

Sempron X2 198  vs
Athlon II X4 651 
Architecture x86-64 x86-64
Threads 2 4
L2 cache 1 MB 4 MB
L2 cache per core 0.5 MB/core 1 MB/core
Manufacture process 32 nm 32 nm
Transistor count 1,178,000,000 1,178,000,000
Max CPUs 1 1
Die size 228 mm² 228 mm²
Voltage range 0.91 - 1.41V 0.91 - 1.41V

overclocking

Overclocked clock speed 2.5 GHz 3.41 GHz
Overclocked clock speed (Water) 2.5 GHz 3 GHz
Overclocked clock speed (Air) 2.5 GHz 3.41 GHz

integrated graphics

GPU None None
Label N/A N/A
Latest DirectX N/A N/A
Number of displays supported N/A N/A
GPU clock speed N/A N/A
Turbo clock speed N/A N/A
3DMark06 N/A N/A

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1866
DDR3-1600
AMD Sempron X2 198
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AMD Athlon II X4 651
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